If you are looking for related to Japanese adult video (AV) catalog numbers — which sometimes follow patterns like “BKSD-015” or similar — please note that those are commercial products with proper identifiers. However, “bakkybksd015 15avi” does not match any official catalog number I can verify.
Most modern media players can play AVI files, including VLC Media Player, Windows Media Player, and QuickTime. If you're having trouble playing an AVI file, it might be due to a codec issue. Installing a codec pack or using a player that can handle a wide range of codecs can help.